effects on children's learning, according to campaigner Kathryn
Albany-Ward.
![](/media/sdkkukh3/health-butterfly-crop-deut.jpg?width=1002&height=668&bgcolor=White&v=1da4d8542ccfb50)
'What colour is the boat in the picture?' 'Can you pass me the blue plate?' 'Shall we sort the beads by their colour?' 'Can you kick the green ball to Hannah?' These may seem simple enough questions for young children, but not so for those who are colour-blind. And there an estimated 450,000 colour-blind children in the UK.
Colour-blind children can see clearly and in focus but, depending on their type of colour blindness, green can look like brown, dark pink/purples can look like blue, and red may look like black.
Colour-blindness is caused by a person's inability to properly 'see' red, green or, in some instances, blue light. But rather than simply confusing colours (for example, seeing red instead of green), they struggle to differentiate any colours that contain an element of red, green and/or blue (see butterfly pictures).
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